Wow that example is a bummer! Yes the JWs treat each other like crap! They are suppose be loving toward each other but I recall them marking young adults for wearing hair or clothes different!
By the way how are you now do you still want to hit something? Hope you can seek help. I know WT does not like people to get help from the world.
I think going in for therapy will give you someone to talk things out. Breaking a window is a cry for help so please get some help. This board can only help you understand cult mind but you need professional hands on help.